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Date:      Thu, 17 Oct 2013 10:39:25 +0300
From:      Vitalij Satanivskij <satan@ukr.net>
To:        Steven Hartland <killing@multiplay.co.uk>
Cc:        Vitalij Satanivskij <satan@ukr.net>, Dmitriy Makarov <supportme@ukr.net>, "Justin T. Gibbs" <gibbs@FreeBSD.org>, Borja Marcos <borjam@sarenet.es>, freebsd-current@freebsd.org
Subject:   Re: ZFS secondarycache on SSD problem on r255173
Message-ID:  <20131017073925.GA34958@hell.ukr.net>
In-Reply-To: <326B470C65A04BC4BC83E118185B935F@multiplay.co.uk>
References:  <8365CE736DC749DF95D0030A725211F6@multiplay.co.uk> <02549AD9-C456-4E17-927C-B4BCC97F8CC8@freebsd.org> <4AA28730F331444AB13108ABF0CD68B7@multiplay.co.uk> <1379496242.750778745.m0ksff1m@fmst-6.ukr.net> <20131016080100.GA27758@hell.ukr.net> <3A44A8F6-8B62-4A23-819D-B91A3E6E5EF9@freebsd.org> <E5E6AB7C-C067-4B92-8A38-9DD811011D6F@FreeBSD.org> <7059AA6DCC0D46B8B1D33FC883C31643@multiplay.co.uk> <20131017061248.GA15980@hell.ukr.net> <326B470C65A04BC4BC83E118185B935F@multiplay.co.uk>

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Just to be sure I understand you clearly, I need to test next configuration:

1) System with ashift patch eg. just latest stable/10 revision 
2) vfs.zfs.trim.enabled=0 in /boot/loader.conf 

So realy only diferens in default system configuration is  disabled trim functional ?



Steven Hartland wrote:
SH> Still worth testing with the problem version installed but
SH> with trim disabled to see if that clears the issues, if
SH> nothing else it will confirm / deny if trim is involved.
SH> 
SH>     Regards
SH>     Steve
SH> 
SH> ----- Original Message ----- 
SH> From: "Vitalij Satanivskij" <satan@ukr.net>
SH> To: "Steven Hartland" <killing@multiplay.co.uk>
SH> Cc: "Justin T. Gibbs" <gibbs@FreeBSD.org>; "Vitalij Satanivskij" <satan@ukr.net>; <freebsd-current@freebsd.org>; "Borja Marcos" 
SH> <borjam@sarenet.es>; "Dmitriy Makarov" <supportme@ukr.net>
SH> Sent: Thursday, October 17, 2013 7:12 AM
SH> Subject: Re: ZFS secondarycache on SSD problem on r255173
SH> 
SH> 
SH> > Hello.
SH> >
SH> > SSD is Intel SSD 530 series (INTEL SSDSC2BW180A4 DC12)
SH> >
SH> > Controler is onboard intel sata controler, motherboard is Supermicro X9SRL-F so it's Intel C602 chipset
SH> >
SH> > All cache ssd connected to sata 2 ports.
SH> >
SH> > System has LSI MPS controler (SAS2308) with firmware version - 16.00.00.00, but only hdd's (36 1TB WD RE4 drives)
SH> > connected to it.
SH> >
SH> >
SH> > Steven Hartland wrote:
SH> > SH> Ohh stupid question what hardware are you running this on,
SH> > SH> specifically what SSD's and what controller and if relavent
SH> > SH> what controller Firmware version?
SH> > SH>
SH> > SH> I wonder if you might have bad HW / FW, such as older LSI
SH> > SH> mps Firmware, which is know to causing corruption with
SH> > SH> some delete methods.
SH> > SH>
SH> > SH> Without the ashift fixes, you'll be sending short requests
SH> > SH> to the disk which will then ignore them, so I can see a
SH> > SH> potential corrilation there.
SH> > SH>
SH> > SH> You could rule this out by disabling ZFS TRIM with
SH> > SH> vfs.zfs.trim.enabled=0 in /boot/loader.conf
SH> > SH>
SH> > SH>     Regards
SH> > SH>     Steve
SH> > SH>
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SH> 
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